PPT-Center of Mass and Linear Momentum

Chapter 9 Copyright 2014 John Wiley amp Sons Inc All rights reserved 91 Center of Mass Motion of rotating objects is complicated T here is a special point for which motion . You should be able to solve 1D and 2D Momentum problems.. Linear Momentum. Antoine Lavoisier proved that mass was conserved by burning iron in a closed system. (The mass of any closed system remains constant.). Linear Momentum. Momentum is a measure of how hard it is to stop or turn a moving object.. p. = m. v. (single particle). P . = . Σ. p. i . (system of particles). Problem:. How fast must an electron move to have the same momentum as a proton moving at 300 m/s?. Chapter 7. 7.1 The Impulse-Momentum Theorem. This section deals with time-varying forces affecting the motion of objects. . The effects of these forces will be discussed using the concepts of . i. mpulse and linear momentum.. An object of mass . m. traveling at velocity has a linear . momentum. (or just momentum), , given by . Units have no special name: kg-m/s. With no net force on a particle, its momentum is constant (Newton #1), but any force will change its momentum. A . torque. is an action that causes objects to rotate.. Torque is . not. . the same thing as force.. For rotational motion, the torque. . is what is most directly related to the motion, not the force.. Momentum Defined. p. = m . v. p. = momentum vector. m. = mass. v. = velocity vector. Momentum Facts. Linear Momentum. p. = m . v. Momentum is a vector quantity!. Velocity and momentum vectors point in the same direction.. s. Compare the inertia of a semi truck and a roller skate… . Will the truck always have more inertia than the roller skate? . Will it always have more momentum than the roller skate?. Warm-Up. Estimate the amount of work the engine performed on a 1200-kg car as it accelerated at 1.2 m/s. Momentum = Mass x Velocity. p. =. mv. The SI unit for momentum is . kg·m. /s. Momentum and velocity are in the same . direction. Is a vector. Using the equation. p=. mv. At the same velocity, as mass increases – momentum increases. Momentum = Mass x Velocity. p. =. mv. The SI unit for momentum is . kg·m. /s. Momentum and velocity are in the same . direction. Is a vector. Using the equation. p=. mv. At the same velocity, as mass increases – momentum increases. and . Collisions. Momentum. Impulse. Impulse-Momentum . theorem. Conservation of . linear momentum. Collisions. Momentum. , p. The linear momentum . p. of an object is the product of the object’s mass . AP Physics 1. M. Dimler. What to Expect from this Unit. Momentum. Impulse. Impulse-Momentum Theorem. Conservation of Momentum. Collisions (Elastic, Inelastic, Perfectly Inelastic, and Explosion). Elastic Collisions-Conservation of KE. … to change equilibrium states!. EXTENSION to ROTATIONS. Translation concepts:. Mass . Linear velocity. Linear momentum. Force. Impulse equation. Equivalent Rotation . concepts:. ??? (define it). ??? (define it). Centre of Mass. Momentum of systems. http://www.chegg.com/homework-help/questions-and-answers/grand-jete-classic-ballet-manoeuvre-dancer-executes-horizontal-leap-moving-arms-legs--cent-q5975347. From Fall 2017 PHY131H1F Midterm Test 2. by Zack Ridgway and Jeffrey Wan . Kinetic energy. Kinetic energy- energy of an object that it possesses due to its motion. . Common examples. A baseball thrown by a pitcher, although having a small mass, can have a large amount of kinetic energy due to its fast velocity..